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US2743909A
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Assignee: Individual
•
Filing: 1953-08-25
•
Granted: 1956-05-01
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Expires: 1973-08-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Lawlor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
B; B01; B01J; B01J4/00; B01J4/008; C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/687; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1082287A
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US1109768A
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US1625592A
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US2073779A
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US2384912A
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US2392026A
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US2611643A
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US2562536A
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FR1036662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |